CN109837057A - A kind of tack liquid silastic - Google Patents
A kind of tack liquid silastic Download PDFInfo
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- CN109837057A CN109837057A CN201910130886.4A CN201910130886A CN109837057A CN 109837057 A CN109837057 A CN 109837057A CN 201910130886 A CN201910130886 A CN 201910130886A CN 109837057 A CN109837057 A CN 109837057A
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Abstract
The invention discloses a kind of tack liquid silastics, it include tackifier and liquid silastic, the tackifier include hydrosilicon, acrylic ester compound, polymerization inhibitor, toluene and platinum catalyst, and the si-h bond of hydrosilicon and the carbon-carbon double bond molar ratio of acrylic ester compound are (1~5): (5~1).Tack liquid silastic prepared by the present invention can not only be bonded the plastics such as PC, PA, PET well, and intensity is good, have good release property to the metals class mold such as stainless steel or zinc-plated nickel plating, and raw material is cheap and easy to get, it is easy to accomplish industrialized production.
Description
Technical field
The present invention relates to organosilicon material adhesive technology field more particularly to a kind of addition self-adhesive liquid silastics.
Background technique
Add-on type liquid silicon rubber (LSR) is the higher veriety of class in silicon rubber, with condensed type liquid silastic
Compare, have many advantages, such as sulfidation do not generate by-product, shrinking percentage it is minimum, can deep layer vulcanization, leakproofness at high temperature
It is better than condensed type.In addition, LSR also has simple process, low-cost outstanding advantages.Due to liquid silastic molecular weight
It is small, viscosity is low, machine-shaping is convenient, the processes such as mixing, preforming, final finishing, automation easy to accomplish can be saved, and can save
The energy and labour, it is with short production cycle and high-efficient.It is widely used in electricity ﹑ Ji Xie ﹑ Wen Wu ﹑ Gong Yi Pin ﹑ Qi Che ﹑ aerospace
Etc. multiple fields.But since its cementability is poor, as Guan Feng ﹑ Tu Fu ﹑ inlaid material in use, it is generally necessary to base
Material does primary coat processing or addition tackifier, the diversity because of material and the continuous improvement to bonding requirements, corresponding silane coupling agent and
Cementability liquid silastic is always an exploitation hot spot of this field.
Chinese patent CN102010598 discloses one kind and synthesizes containing isocyanurate group with triethoxysilane addition reaction
Tackifier, which is added to the good bonding that silica gel and plastics are able to achieve in add-on type liquid silicon rubber, but due to containing
There is nitrogen functional group, is easy to be that platinum catalyst is poisoned and is used limited.
United States Patent (USP) US4525400 discloses a kind of tetramethyl tetramethoxy cyclotetrasiloxane tackifier, adds 0.75 part,
Can have with aluminium flake stainless steel PVC it is preferable bonding, but there are curing time it is slow the disadvantages of.
European patent EP 2158258 is disclosed with 1,2- epoxy 4- ethylene butylcyclohexane ﹑ methyl styrene and tetramethyl-ring
Tetrasiloxane synthesizes a kind of tackifier, which has a good cementability to fuel-cell electrolyte film, but the bonding
The disadvantages of agent is there is also with silica gel poor compatibility.
Chinese patent CN103351467A discloses a kind of acrylic acid etc compound and synthesizes with containing hydrogen silicone oil Si―H addition reaction
A kind of tackifier, the tackifier are able to achieve bonding with thermoplastic with silica gel, but also have compatibility bad, silica gel mechanical property
The problems such as capable of declining.
Although at present to add-on type cementability liquid silastic it has been reported that but majority that there are compatibilities is bad, be easy to make
Catalyst poisoning, the features such as making silica gel mechanical properties decrease.This has seriously affected the production of add-on type cementability liquid silastic
And popularization.Therefore, synthesis cementability is good, and simple process, the tackifier for not influencing silica gel performance itself will expand liquid silicon significantly
Rubber uses scope.
Therefore it is a kind of good using synthesis cementability to need, and simple process does not influence oneself of the tackifier of silica gel itself performance
Viscous liquid silicon rubber solves above-mentioned technical problem.
Summary of the invention
Shortcoming present in view of the above technology, the purpose of the present invention is to provide a kind of tack liquid silicon rubbers
Glue can not only be bonded the plastics such as PC, PA, PET well, and intensity is good, have good release property to metal class mold, and
Simple process, raw material are cheap and easy to get, it is easy to accomplish industrialized production.
To achieve the above object, technical scheme is as follows:
The present invention provides a kind of tack liquid silastic, includes tackifier and liquid silastic, the tackifier packet
Included hydrosilicon, acrylic ester compound, polymerization inhibitor, toluene and platinum catalyst, the si-h bond of hydrosilicon and
The carbon-carbon double bond molar ratio of acrylic ester compound is (1~5): (5~1)；
The liquid silastic includes the component of following parts by weight: the vinyl that 40~60 parts of viscosity are 3~80,000 seals
Dimethyl silicone polymer is held, the ethenyl blocking dimethyl silicone polymer that 20-40 parts of viscosity is 0.1~20,000,1~15 part viscous
Vinyl silicone oil of the degree for 0.01-0.3 ten thousand, 20~45 parts of fume colloidal silicas, 1~10 part of hexamethyldisilazane, 0.5~5
Part water, 0.2~2.5 part be 0.3~1.6% containing hydrogen content containing hydrogen silicone oil, 0.005~0.01 part of methyl butynol or acetylene
Cyclohexanol.
In the present invention, using the cross-linking reaction of double bond and si-h bond participation silicon rubber in bonding agent, silicon rubber is improved
The mechanical property of glue: meanwhile, the ester group in bonding agent is chemically reacted with substrate surface, forms firm chemical bond, is realized
Liquid silastic is bonding with substrate；And have good compatibility by cross-linking reaction, above-mentioned bonding agent and liquid silastic,
And the mechanical property of silica gel can be improved, and platinum catalyst will not be made to be poisoned.
Further, hydrogeneous mass fraction is 0.1~1.6% in the hydrosilicon, and viscosity is 15~100mPa.s.
Preferably, hydrogeneous mass fraction is 0.3~1.6% in the hydrosilicon, and viscosity is 15~300mPa.s.
Further, the acrylic ester compound is 1,4-butanediol diacrylate, two propylene of 1,5-PD
Acid esters, 1,6- ethylene glycol diacrylate acid esters, glycidyl methacrylate, hydroxy-ethyl acrylate are any in KH-570
A kind of or combination.
Further, mass fraction shared by polymerization inhibitor is 0.1%~2% in tackifier, the institute of toluene described in tackifier
The mass fraction accounted for is 5%~30%, and the polymerization inhibitor is phenolic inhibitor.
Further, the platinum catalyst is Speier catalyst or Karstedt catalyst, the platinum catalyst
Middle platinum content is 0.1~10PPM.
Further, the vinyl mass fraction of vinyl silicone oil is 0.1-4%.
The present invention also provides a kind of preparation methods with tack liquid silastic, comprising the following steps:
Step S1: acrylic ester compound being added in reaction kettle with platinum catalyst and is uniformly mixed, and forms mixed liquor
It is spare；
Step S2: being added hydrosilicon and polymerization inhibitor under nitrogen protection, and 60 DEG C of heating stirs evenly, then by step S1
In mixed liquor, be slowly dropped in reaction kettle, heat while stirring, time for adding 0.5-2h；Reaction is controlled after dripping
60~100 DEG C of 1~5h of reaction of temperature；Then 0.5~2h of activated carbon adsorption is added, reactant is finally filtered into removing low molecule and is obtained
To tackifier；Wherein, the carbon-carbon double bond molar ratio of the si-h bond of hydrosilicon and acrylic ester compound is (1~5): (5
~1)；
Step S3: prepared tackifier are added in liquid silastic, obtain tack after row's bubble by evenly mixing
Liquid silastic；Wherein, the mass fraction of middle tackifier is 0.05~10% in tack liquid silastic.
Further, hydrogeneous mass fraction is 0.1~1.6% in the hydrosilicon, and viscosity is 15~100mPa.s.
Preferably, hydrogeneous mass fraction is 0.3~1.6% in the hydrosilicon, and viscosity is 15~300mPa.s；It is hindered in tackifier
Mass fraction shared by poly- agent is 0.1%~2%, and mass fraction shared by toluene described in tackifier is 5%~30%, described
Polymerization inhibitor is phenolic inhibitor；The platinum catalyst is Speier catalyst or Karstedt catalyst, the platinum catalysis
Platinum content is 0.1~10PPM in agent.
Further, the acrylic ester compound is 1,4-butanediol diacrylate, two propylene of 1,5-PD
Acid esters, 1,6- ethylene glycol diacrylate acid esters, glycidyl methacrylate, hydroxy-ethyl acrylate are any in KH-570
A kind of or combination.
Further, the liquid silastic includes the component of following parts by weight: 40~60 parts of viscosity are 3~80,000
Ethenyl blocking dimethyl silicone polymer, the ethenyl blocking dimethyl silicone polymer that 20-40 parts of viscosity is 0.1~20,000,
The vinyl silicone oil that 1~15 part of viscosity is 0.01-0.3 ten thousand, 20~45 parts of fume colloidal silicas, 1~10 part of two silicon nitrogen of hexamethyl
Alkane, 0.5~5 part of water, 0.2~2.5 part containing hydrogen content be 0.3~1.6% containing hydrogen silicone oil, 0.005~0.01 part of methyl fourth
Alkynol or ethynylcyclohexanol；
Wherein, vinyl silicone oil medium vinyl mass fraction is 0.1-4%.
The present invention improves the power of silicon rubber using the cross-linking reaction of double bond and si-h bond participation silicon rubber in bonding agent
Learn performance: meanwhile, the ester group in bonding agent occurs chemical reaction with substrate surface and realizes that liquid silastic is bonding with substrate；And
And have good compatibility by cross-linking reaction bonding agent and liquid silastic, and the mechanical property of silica gel can be improved, and
Platinum catalyst will not be made to be poisoned.Tack liquid silastic prepared by the present invention as a result, can not only be bonded well PC, PA,
The plastics such as PET, and intensity is good, has good release property to the metals class mold such as stainless steel or zinc-plated nickel plating, and raw material is honest and clean
Valence is easy to get, it is easy to accomplish industrialized production.
Specific embodiment
In order to which the purpose of the present invention, technical solution and beneficial effect is more clearly understood, the present invention is carried out further
It is described in detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this hair
It is bright.
To achieve the above object, the present invention provides a kind of tack liquid silastic, includes tackifier and liquid silicon rubber
Glue, tackifier include hydrosilicon, acrylic ester compound, polymerization inhibitor, toluene and platinum catalyst, hydrosilicon
Si-h bond and acrylic ester compound carbon-carbon double bond molar ratio be (1~5): (5~1)；
Liquid silastic includes the component of following parts by weight: the ethenyl blocking that 40~60 parts of viscosity are 3~80,000 is poly-
Dimethyl siloxane, the ethenyl blocking dimethyl silicone polymer that 20-40 parts of viscosity is 0.1~20,000,1~15 part of viscosity are
The vinyl silicone oil of 0.01-0.3 ten thousand, 20~45 parts of fume colloidal silicas, 1~10 part of hexamethyldisilazane, 0.5~5 part of water,
0.2~2.5 part containing hydrogen content be 0.3~1.6% containing hydrogen silicone oil, 0.005~0.01 part of methyl butynol or acetylene basic ring
Hexanol.
In the present invention, using the cross-linking reaction of double bond and si-h bond participation silicon rubber in bonding agent, silicon rubber is improved
The mechanical property of glue: meanwhile, the ester group in bonding agent is chemically reacted with substrate surface, forms firm chemical bond, is realized
Liquid silastic is bonding with substrate；And have good compatibility by cross-linking reaction, above-mentioned bonding agent and liquid silastic,
And the mechanical property of silica gel can be improved, and platinum catalyst will not be made to be poisoned.
In the present embodiment, hydrogeneous mass fraction is 0.1~1.6% in hydrosilicon, and viscosity is 15~100mPa.s.
Preferably, hydrogeneous mass fraction is 0.3~1.6% in hydrosilicon, and viscosity is 15~300mPa.s.
In the present embodiment, acrylic ester compound is 1,4-butanediol diacrylate, two propylene of 1,5-PD
Acid esters, 1,6- ethylene glycol diacrylate acid esters, glycidyl methacrylate, hydroxy-ethyl acrylate are any in KH-570
A kind of or combination.
In the present embodiment, mass fraction shared by polymerization inhibitor is 0.1%~2% in tackifier, toluene institute in tackifier
The mass fraction accounted for is 5%~30%, and polymerization inhibitor is phenolic inhibitor.
In the present embodiment, platinum catalyst is Speier catalyst or Karstedt catalyst, platinum in platinum catalyst
Content is 0.1~10PPM.
In the present embodiment, vinyl silicone oil medium vinyl mass fraction is 0.1-4%.
The present invention also provides a kind of preparation methods with tack liquid silastic, comprising the following steps:
Step S1: acrylic ester compound being added in reaction kettle with platinum catalyst and is uniformly mixed, and forms mixed liquor
It is spare；
Step S2: being added hydrosilicon and polymerization inhibitor under nitrogen protection, and 60 DEG C of heating stirs evenly, then by step S1
In mixed liquor, be slowly dropped in reaction kettle, heat while stirring, time for adding 0.5-2h；Reaction is controlled after dripping
60~100 DEG C of 1~5h of reaction of temperature；Then 0.5~2h of activated carbon adsorption is added, reactant is finally filtered into removing low molecule and is obtained
To tackifier；Wherein, the carbon-carbon double bond molar ratio of the si-h bond of hydrosilicon and acrylic ester compound is (1~5): (5
~1)；
Step S3: prepared tackifier are added in liquid silastic, obtain tack after row's bubble by evenly mixing
Liquid silastic；Wherein, the mass fraction of the tackifier in tack liquid silastic is 0.05~10%.
In the present embodiment, hydrogeneous mass fraction is 0.1~1.6% in hydrosilicon, and viscosity is 15~100mPa.s.
Preferably, hydrogeneous mass fraction is 0.3~1.6% in hydrosilicon, and viscosity is 15~300mPa.s；Polymerization inhibitor in tackifier
Shared mass fraction is 0.1%~2%, and mass fraction shared by toluene is 5%~30% in tackifier, and polymerization inhibitor is phenols
Polymerization inhibitor；Platinum catalyst is Speier catalyst or Karstedt catalyst, and platinum catalyst platinum content is 0.1~10PPM.
In the present embodiment, acrylic ester compound is 1,4-butanediol diacrylate, two propylene of 1,5-PD
Acid esters, 1,6- ethylene glycol diacrylate acid esters, glycidyl methacrylate, hydroxy-ethyl acrylate are any in KH-570
A kind of or combination.
In the present embodiment, liquid silastic includes the component of following parts by weight: 40~60 parts of viscosity are 3~80,000
Ethenyl blocking dimethyl silicone polymer, the ethenyl blocking dimethyl silicone polymer that 20-40 parts of viscosity is 0.1~20,000,
The vinyl silicone oil that 1~15 part of viscosity is 0.01-0.3 ten thousand, 20~45 parts of fume colloidal silicas, 1~10 part of two silicon nitrogen of hexamethyl
Alkane, 0.5~5 part of water, 0.2~2.5 part containing hydrogen content be 0.3~1.6% containing hydrogen silicone oil, 0.005~0.01 part of methyl fourth
Alkynol or ethynylcyclohexanol；
Wherein, the vinyl mass fraction in vinyl silicone oil is 0.1-4%.
Compared with prior art, the present invention utilizes the cross-linking reaction of double bond and si-h bond participation silicon rubber in bonding agent,
Improve the mechanical property of silicon rubber: meanwhile, ester group and substrate surface in bonding agent occur chemical reaction and realize liquid silicon rubber
Glue is bonding with substrate；And there is good compatibility by cross-linking reaction bonding agent and liquid silastic, and silicon can be improved
The mechanical property of glue, and platinum catalyst will not be made to be poisoned.Tack liquid silastic prepared by the present invention as a result, not only
It can be bonded the plastics such as PC, PA, PET well, and intensity is good, have well to the metals class mold such as stainless steel or zinc-plated nickel plating
Release property, and raw material is cheap and easy to get, it is easy to accomplish industrialized production.
Tack liquid silastic of the invention is specifically described below in conjunction with specific embodiment.
Embodiment 1
Step S1: by 79.2g1,4- butanediol diacrylate, 23.2g hydroxy-ethyl acrylate, the platinum of 0.42g4000ppm
Au catalyst, stirs evenly that form mixed liquor spare；
Step S2: by 220g tetramethyl-ring tetrasiloxane, band thermometer and condensing reflux pipe is added in 0.45g para hydroxybenzene phenol
Four-hole boiling flask, stir under nitrogen protection and be warming up to 60 DEG C.The mixed liquor of step 1 is slowly added to, is continued after adding
120 DEG C of reaction 4h are warming up to, it is cooling, 20g activated carbon adsorption 1h is added.It finally filters, obtains tackifier 1 after removing low molecule；
Step S3: the ethenyl blocking dimethyl silicone polymer for being 80,000 by 50 parts of viscosity, 20 parts of 20,000 vinyl envelope
Dimethyl silicone polymer is held, 1 part of viscosity is the vinyl silicone oil that 300mPa.s vinyl mass fraction is 1%, 25 parts of vapor phase methods
Kneader is added at room temperature and stirs evenly, is then warming up to 180 DEG C for white carbon black, 5 parts of hexamethyldisilazane, 1.52 parts of water,
Vacuum degree is 0.01MPa, handles 3h, and the containing hydrogen silicone oil that 0.65 part of hydrogen content is 0.8%, 0.005 part of second are sequentially added after cooling
Alkynyl cyclohexanol, 0.5 part of tackifier stir evenly, and the platinum catalyst for adding 0.01 part of 4000ppm stirs evenly, and finally exist
130 DEG C of solidification 5min moldings.Sample performance is as shown in table 1.
Embodiment 2
Step S1: by 93.6g1,6- butanediol diacrylate, the platinum catalyst of 0.41g4000ppm is stirred evenly
It is spare to form mixed liquor；
Step S2: being the containing hydrogen silicone oil that 30mPa.s hydrogen content is 1.5% by 185g viscosity, and 0.4g para hydroxybenzene phenol is added
Four-hole boiling flask with thermometer and condensing reflux pipe stirs under nitrogen protection and is warming up to 50 DEG C.The mixed liquor of step 1 is delayed
It is slow to be added, 90 DEG C of reaction 4h are continuously heating to after adding, it is cooling, 20g activated carbon adsorption 1h is added.It finally filters, removes low
Tackifier 2 are obtained after molecule；
Step S3: the ethenyl blocking dimethyl silicone polymer for being 80,000 by 40 parts of viscosity, 20 parts of 20,000 vinyl envelope
Dimethyl silicone polymer is held, 2 parts of viscosity are the vinyl silicone oil that 300mPa.s vinyl mass fraction is 1%, 28 parts of vapor phase methods
Kneader is added at room temperature and stirs evenly, is then warming up to 180 DEG C for white carbon black, 6 parts of hexamethyldisilazane, 1.6 parts of water,
Vacuum degree is 0.01MPa, handles 3h, and the containing hydrogen silicone oil that 0.95 part of hydrogen content is 0.8%, 0.005 part of second are sequentially added after cooling
Alkynyl cyclohexanol, 4.5 parts of tackifier stir evenly, and the platinum catalyst for adding 0.01 part of 4000ppm stirs evenly, and finally exist
130 DEG C of solidification 5min moldings.Sample performance is as shown in table 1.
Embodiment 3
Step S1: by 198g1,4- butanediol diacrylate acrylic ester compound, 142g Glycidyl methacrylate
Glyceride, the platinum catalyst of 1.6g4000ppm stir evenly that form mixed liquor spare；
Step S2: by 580g tetramethyl-ring tetrasiloxane, band thermometer and condensing reflux pipe is added in 1.0g para hydroxybenzene phenol
Four-hole boiling flask, stir under nitrogen protection and be warming up to 50 DEG C.The mixed liquor of step 1 is slowly added to, is continued after adding
90 DEG C of reaction 4h are warming up to, it is cooling, 30g activated carbon adsorption 1h is added.It finally filters, obtains tackifier 3 after removing low molecule；
Step S3: the ethenyl blocking dimethyl silicone polymer for being 80,000 by 60 parts of viscosity, 25 parts of 20,000 vinyl envelope
Dimethyl silicone polymer is held, 4 parts of viscosity are the vinyl silicone oil that 50mPa.s vinyl mass fraction is 2%, and 32 parts of vapor phase methods are white
Kneader is added at room temperature and stirs evenly, is then warming up to 180 DEG C, vacuum for carbon black, 8 parts of hexamethyldisilazane, 2 parts of water
Degree is 0.01MPa, handles 3h, and the containing hydrogen silicone oil that 2 parts of hydrogen contents are 1.1%, 0.005 part of acetenyl hexamethylene are sequentially added after cooling
Alcohol, 1.5 parts of tackifier stir evenly, and the platinum catalyst for adding 0.01 part of 4000ppm stirs evenly, and finally solidify at 130 DEG C
5min molding.Sample performance is as shown in table 1.
Comparative example
The ethenyl blocking dimethyl silicone polymer for being 80,000 by 40 parts of viscosity, 20 parts of the poly- diformazan of 20,000 ethenyl blocking
Radical siloxane, 2 parts of viscosity are the vinyl silicone oil that 50mPa.s vinyl mass fraction is 2%, 30 parts of fume colloidal silicas, 7 parts
Kneader is added at room temperature and stirs evenly, is then warming up to 180 DEG C, vacuum degree is for hexamethyldisilazane, 1.8 parts of water
0.01MPa handles 3h, and the containing hydrogen silicone oil that 1.6 parts of hydrogen contents are 0.8%, 0.005 part of acetenyl hexamethylene are sequentially added after cooling
Alcohol is added without tackifier, and the platinum catalyst for adding 0.01 part of 4000ppm stirs evenly, and finally forms in 130 DEG C of solidification 5min.
Sample performance is as shown in table 1.
The performance that above-described embodiment 1-4 is tested with comparative example has:
1. according to the hardness of GB/T-531-1999 measurement silica gel, tensile strength and elongation at break；
2. according to the tearing toughness of GB/T-529-1999 measurement silica gel；
3. measuring 1 tackifier of bond failure situation table of silica gel and PC, PA, PET to liquid silicon according to GBT7760-2003
The bonding and Effect on Mechanical Properties of rubber
As can be seen from Table 1, embodiment 1,2,3 compared with comparative example, and to PC, the cementability of PA, PET have significantly
It improves, wherein embodiment 3 reaches 100% cohesional failure to PET, the cementability of PC, and it is broken also to reach 80% to the cementability of PA
It is bad, and mechanical property has small size raising.This is because: firstly, double bond and si-h bond in bonding agent participate in the friendship of silicon rubber
Connection reaction, improves the mechanical property of silica gel: secondly the ester group in bonding agent is chemically reacted with substrate surface, is formed secured
Chemical bond, realize that liquid silastic is bonding with substrate, and tackifier of the invention are not added in comparative example, experiment effect
Difference.
Other several embodiments are as follows:
Embodiment 4
Step S1: by 222g1,4- butanediol diacrylate acrylic ester compound, 150g Glycidyl methacrylate
Glyceride, the platinum catalyst of 1.8g4000ppm stir evenly spare；
Step S2: by 620g tetramethyl-ring tetrasiloxane, band thermometer and condensing reflux pipe is added in 1.2g para hydroxybenzene phenol
Four-hole boiling flask, stir under nitrogen protection and be warming up to 50 DEG C.The material that upper step mixes is slowly added to, is added with subsequent
It is continuous to be warming up to 90 DEG C of reaction 4h, it is cooling, 30g activated carbon adsorption 1h is added.It finally filters, obtains tackifier 4 after removing low molecule；
Step S3: the ethenyl blocking dimethyl silicone polymer for being 80,000 by 60 parts of viscosity, 18 parts of 20,000 vinyl envelope
Dimethyl silicone polymer is held, 4 parts of viscosity are the vinyl silicone oil that 50mPa.s vinyl mass fraction is 2%, and 33 parts of vapor phase methods are white
Kneader is added at room temperature and stirs evenly, is then warming up to 180 DEG C, very for carbon black, 8.2 parts of hexamethyldisilazane, 2 parts of water
Reciprocal of duty cycle is 0.01MPa, handles 3h, and the containing hydrogen silicone oil that 2 parts of hydrogen contents are 1.0%, 0.005 part of acetylene basic ring are sequentially added after cooling
Hexanol, 1.5 parts of tackifier stir evenly, and the platinum catalyst for adding 0.01 part of 4000ppm stirs evenly, finally solid at 130 DEG C
Change 5min molding.
Embodiment 5
Step S1: by 188g1,4- butanediol diacrylate acrylic ester compound, 140g Glycidyl methacrylate
Glyceride, the platinum catalyst of 1.5g4000ppm stir evenly spare；
Step S2: by 530g tetramethyl-ring tetrasiloxane, band thermometer and condensing reflux pipe is added in 1.0g para hydroxybenzene phenol
Four-hole boiling flask, stir under nitrogen protection and be warming up to 50 DEG C.The material that upper step mixes is slowly added to, is added with subsequent
It is continuous to be warming up to 90 DEG C of reaction 4h, it is cooling, 30g activated carbon adsorption 1h is added.It finally filters, obtains tackifier 5 after removing low molecule；
Step S3: the ethenyl blocking dimethyl silicone polymer for being 80,000 by 60 parts of viscosity, 21 parts of 20,000 vinyl envelope
Dimethyl silicone polymer is held, 4 parts of viscosity are the vinyl silicone oil that 50mPa.s vinyl mass fraction is 2%, and 32 parts of vapor phase methods are white
Kneader is added at room temperature and stirs evenly, is then warming up to 180 DEG C, very for carbon black, 7.2 parts of hexamethyldisilazane, 2 parts of water
Reciprocal of duty cycle is 0.01MPa, handles 3h, and the containing hydrogen silicone oil that 2 parts of hydrogen contents are 1.1%, 0.005 part of acetylene basic ring are sequentially added after cooling
Hexanol, 1.5 parts of tackifier stir evenly, and the platinum catalyst for adding 0.01 part of 4000ppm stirs evenly, finally solid at 130 DEG C
Change 5min molding.
Embodiment 6
Step S1: by 168g1,4- butanediol diacrylate acrylic ester compound, 122g Glycidyl methacrylate
Glyceride, the platinum catalyst of 1.4g4000ppm stir evenly spare；
Step S2: by 480g tetramethyl-ring tetrasiloxane, band thermometer and condensing reflux pipe is added in 1.0g para hydroxybenzene phenol
Four-hole boiling flask, stir under nitrogen protection and be warming up to 50 DEG C.The material that upper step mixes is slowly added to, is added with subsequent
It is continuous to be warming up to 90 DEG C of reaction 4h, it is cooling, 20g activated carbon adsorption 0.5h is added.It finally filters, obtains tackifier after removing low molecule
6；
Step S3: the ethenyl blocking dimethyl silicone polymer for being 80,000 by 40 parts of viscosity, 20 parts of 20,000 vinyl envelope
Dimethyl silicone polymer is held, 4 parts of viscosity are the vinyl silicone oil that 50mPa.s vinyl mass fraction is 2%, and 32 parts of vapor phase methods are white
Kneader is added at room temperature and stirs evenly, is then warming up to 180 DEG C, vacuum for carbon black, 8 parts of hexamethyldisilazane, 2 parts of water
Degree is 0.01MPa, handles 3h, and the containing hydrogen silicone oil that 2 parts of hydrogen contents are 1.1%, 0.005 part of acetenyl hexamethylene are sequentially added after cooling
Alcohol, 1.5 parts of tackifier stir evenly, and the platinum catalyst for adding 0.01 part of 4000ppm stirs evenly, and finally solidify at 130 DEG C
5min molding.
Therefore, a kind of tack liquid silastic provided by the invention can not only be bonded the modeling such as PC, PA, PET well
Material, and intensity is good, has good release property, and simple process, raw material to the metals class mold such as stainless steel or zinc-plated nickel plating
It is cheap and easy to get, it is easy to accomplish industrialized production.
The above is only several preferred embodiments of the invention, are not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. a kind of tack liquid silastic, it is characterised in that include tackifier and liquid silastic, the tackifier include
There are hydrosilicon, acrylic ester compound, polymerization inhibitor, toluene and platinum catalyst, the si-h bond of hydrosilicon and third
The carbon-carbon double bond molar ratio of olefin(e) acid ester type compound is (1~5): (5~1).
The liquid silastic includes the component of following parts by weight: the ethenyl blocking that 40~60 parts of viscosity are 3~80,000 is poly-
Dimethyl siloxane, the ethenyl blocking dimethyl silicone polymer that 20-40 parts of viscosity is 0.1~20,000,1~15 part of viscosity are
The vinyl silicone oil of 0.01-0.3 ten thousand, 20~45 parts of fume colloidal silicas, 1~10 part of hexamethyldisilazane, 0.5~5 part of water,
0.2~2.5 part containing hydrogen content be 0.3~1.6% containing hydrogen silicone oil, 0.005~0.01 part of methyl butynol or acetylene basic ring
Hexanol.
2. tack liquid silastic according to claim 1, it is characterised in that hydrogeneous quality in the hydrosilicon
Score is 0.1~1.6%, and viscosity is 15~100mPa.s.
3. tack liquid silastic according to claim 1, it is characterised in that the acrylic ester compound is 1,
4- butanediol diacrylate, 1,5-PD diacrylate, 1,6- ethylene glycol diacrylate acid esters, Glycidyl methacrylate
Glyceride, hydroxy-ethyl acrylate, any one in KH-570 or combination.
4. tack liquid silastic according to claim 1, it is characterised in that quality shared by polymerization inhibitor in tackifier
Number is 0.1%~2%, and mass fraction shared by toluene described in tackifier is 5%~30%, and the polymerization inhibitor is phenols resistance
Poly- agent.
5. tack liquid silastic according to claim 1, it is characterised in that the platinum catalyst is urged for Speier
Agent or Karstedt catalyst, the platinum catalyst platinum content are 0.1~10PPM.
6. tack liquid silastic according to claim 1, it is characterised in that vinyl silicone oil medium vinyl quality point
Number is 0.1-4%.
7. a kind of preparation method with tack liquid silastic, it is characterised in that the following steps are included:
Step S1: acrylic ester compound being added in reaction kettle with platinum catalyst and is uniformly mixed, and it is spare to form mixed liquor；
Step S2: being added hydrosilicon and polymerization inhibitor under nitrogen protection, and 60 DEG C of heating stirs evenly, then will be in step S1
Mixed liquor is slowly dropped in reaction kettle, is heated while stirring, time for adding 0.5-2h；Reaction temperature is controlled after dripping
60~100 DEG C of 1~5h of reaction；Then 0.5~2h of activated carbon adsorption is added, reactant is finally filtered into removing low molecule and is increased
Stick；Wherein, the carbon-carbon double bond molar ratio of the si-h bond of hydrosilicon and acrylic ester compound is (1~5): (5~
1)；
Step S3: prepared tackifier are added in liquid silastic, obtain tack liquid after row's bubble by evenly mixing
Silicon rubber；Wherein, the mass fraction of the tackifier in tack liquid silastic is 0.05~10%.
8. the preparation method of tack liquid silastic according to claim 7, it is characterised in that the hydrosilicon
In hydrogeneous mass fraction be 0.1~1.6%, viscosity be 15~100mPa.s；Mass fraction shared by polymerization inhibitor is in tackifier
0.1%~2%, mass fraction shared by toluene described in tackifier is 5%~30%, and the polymerization inhibitor is phenolic inhibitor；
The platinum catalyst be Speier catalyst or Karstedt catalyst, the platinum catalyst platinum content be 0.1~
10PPM。
9. the preparation method of tack liquid silastic according to claim 7, it is characterised in that the esters of acrylic acid
Compound is 1,4-butanediol diacrylate, 1,5-PD diacrylate, 1,6- ethylene glycol diacrylate acid esters, methyl
Glycidyl acrylate, hydroxy-ethyl acrylate, any one in KH-570 or combination.
10. the preparation method of tack liquid silastic according to claim 7, it is characterised in that the liquid silastic
It include the component of following parts by weight: the ethenyl blocking dimethyl silicone polymer that 40~60 parts of viscosity is 3~80,000,20-40
The ethenyl blocking dimethyl silicone polymer that the viscosity of part is 0.1~20,000, the vinyl that 1~15 part of viscosity is 0.01-0.3 ten thousand
Silicone oil, 20~45 parts of fume colloidal silicas, 1~10 part of hexamethyldisilazane, 0.5~5 part of water, 0.2~2.5 part contains hydrogen content
For 0.3~1.6% containing hydrogen silicone oil, 0.005~0.01 part of methyl butynol or ethynylcyclohexanol；Wherein, vinyl silicon
Oily medium vinyl mass fraction is 0.1-4%.
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| CN110373029A (en) * | 2019-07-31 | 2019-10-25 | 杭州超德斯实业有限公司 | A kind of oxygen mask and its material used |
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| CN113736425A (en) * | 2021-10-15 | 2021-12-03 | 东莞天绘新材料有限公司 | Self-adhesive liquid silicone rubber and preparation method thereof |
| CN115287008A (en) * | 2022-08-25 | 2022-11-04 | 泉州森润煜辉反光材料有限公司 | Reflective silica gel film |
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